MW4 DMZ patch tracker: 29 October cash buffs, Possum nerf and Hajin fixes
Verified changes through 2am AEST 31 October: increased mission cash, the Possum restriction, safer exfils, weapon-vs-Colossus changes, and unresolved issues.
As of 2am AEST, 31 October 2026, the latest published Infinity Ward launch patch section is dated 29 October. That section chiefly improves DMZ mission cash rewards and fixes Scavenger behaviour, exfil hazards and Hajīn terrain. The 28 October update separately restricts Possum, and the 25 October update reduces Drill Charge damage against Colossus enemies. These are different dates and different mechanics.
Important: The developer tunes DMZ and Multiplayer weapons separately. The rifle/SMG damage table in the 28 October patch is explicitly a Multiplayer list and must not be used as a verified DMZ weapon tier list. See our Multiplayer weapon-by-weapon breakdown.
Every important DMZ change, by update date
| Official date | What changed | Confirmed details |
|---|---|---|
| 29 October | Economy increased | More cash awarded for Dynamic Ops, Side Ops and replayed Story Missions. No exact cash amounts published. |
| 29 October | Scavenger and exfil | Immediate spawn-detection bug addressed; enemy helicopters colliding with exfil helicopter fixed. |
| 29 October | Hajīn map | Additional stuck terrain and overlapping vehicles near map edge addressed. |
| 29 October | Missions / loot | Squadmate DMZ Mastery Camo progress, assimilated-hostage pickup, Lieutenant Tower prompts, Dog Tag case, Encrypted Voice Logs improved. |
| 28 October | Possum Trait | Cannot activate if defeating team is nearby or until four minutes pass. Studio says range/time may be adjusted later. |
| 28 October | Bugs | 3D Printer Free Loadout loss, disappearing stored guns, Secure Slot card upgrades, squad-wipe black screen addressed. |
| 25 October | Colossus balance | Drill Charge damage against enemy Colossus reduced; no numerical percentage given. |
| 25 October | XP | Search and Destroy and Collateral kill XP 100 → 300; this is Multiplayer XP, not a DMZ weapon change. |
| 24 October | Hajīn / exfil | More rock-stuck zones fixed and exfil helicopter disappearance addressed. Some PC dog tag-related network issues flagged at the time. |
| 23 October | Survival equipment | Gas Masks (including Durable) no longer break immediately in radiation; disposable Parachutes now have three uses. |
What this actually changes for your run
Replaying a Story Mission or taking a nearby Side Op may now help rebuild your cash. Infinity Ward did not publish exact before-and-after payouts, so claiming any particular cash-per-minute figure would be invented. Compare your own successful extractions and objectives, rather than assuming the biggest advertised reward is the safest.
Possum remains a survival tool but can no longer be immediately used to return to a fight against the squad that downed you. You must meet the location/timing restriction described by the studio. Separately, reduced Drill Charge effectiveness against a Colossus means old damage assumptions are not reliable; the patch does not publish new numerical damage values.
Fixes are not guarantees
The 29 October notes address enemy helicopters colliding with an exfil helicopter, several places players could get stuck on Hajīn and an immediate Scavenger detection bug. They do not certify every exfil, AI behaviour or map edge as bug-free. Mastery Camo squad progression, certain mission loot, encrypted logs and dog-tag problems also received targeted repairs.
Known issues and things still to watch
The 28 October official known-issues section still flags the Patriot XMR Platinum Camo challenge UI, some Calling Cards, Best Play selection and a case where Classic Prestige through DMZ menus can prevent new Multiplayer classes until previously created classes containing newly relocked items are deleted. Check the official live notes and linked Infinity Ward issue board before acting on old workaround advice.
Plan your next deployment
- Check your Free Loadout and Overflow Stash before matchmaking.
- Choose one Dynamic Op, Side Op or known replay mission appropriate for your kit; treat reward values as unmeasured.
- Use the interactive Hājīn field map for named places and a route plan. Its positions are editorial approximations, not verified live exfil coordinates.
- When extracting, retain situational awareness; bug fixes reduce known failure cases without removing PvP or AI risk.
Our earlier 29 October economy explainer contains practical cash-progression advice. This tracker adds the dated changes that came before it, including Possum and Colossus.
Source: Infinity Ward's rolling Modern Warfare 4 launch patch notes, 23–29 October 2026. No unverified 30/31 October patch has been inserted.
Sources & verification
Original source published: . References reviewed 31 Oct 2026 AEST.